Issues

On the cover: Map showing high-resolution (2-m) bathymetry of the caldera walls and resurgent cones at Brothers volcano—derived from the autonomous underwater vehicle ABE—overlain on 25-m resolution, ship-derived bathymetry for the caldera floor, upper caldera rim, and volcano flanks. Translucent areas depict zones of low magnetization intensity associated with hydrothermal fluid upflow zones and incorporate most of the known vent fields, including the Upper Caldera, NW Caldera, W Caldera, SE Caldera (extinct), and Upper Cone. International Ocean Discovery Program (IODP) Sites (red dots) referred to throughout the special volume include U1527, U1528, U1529, U1530, and U1531, with several boreholes drilled at each site. Transverse mercator projection, central meridian = 179°E. Figure from the paper by de Ronde et al. in this issue.